Python os.device_encoding()

Python中的os.device_encoding()方法用于获取与指定文件描述符相关联的设备的编码，如果该设备连接到终端。如果指定的文件描述符没有连接到终端，则此方法返回None。

注意:此方法仅在某些UNIX版本中可用。

语法:os.device_encoding(fd)

参数:

fd:要查询其设备编码的文件描述符。

返回类型:此方法返回一个字符串值，该值表示与指定文件描述符相关联的设备的编码(如果该设备连接到终端，则为None)。

示例1

使用os.device_encoding()方法来获取与给定文件描述符相关的设备的编码。

# Python program to explain os.device_encoding() method  
  
# importing os module 
import os
  
# File path
path = "/home/ihritik/Desktop/file.txt"
  
# Open the file and get 
# the file descriptor associated
# with it using os.open() method 
fd = os.open(path, os.O_RDWR | os.O_CREAT)
  
  
# Check if file descriptor fd
# is open and connected
# to a terminal using os.isatty() method
print("Connected to a terminal:", os.isatty(fd))
  
  
# Print the encoding of
# the device associated with
# the file descriptor fd
# using os.device_encoding() method
print("Device encoding:", os.device_encoding(fd)) 
  
  
# Open a new pseudo-terminal pair
# using os.openpty() method
# It will return master and slave 
# file descriptor for 
# pty ( pseudo terminal device) and
# tty ( native terminal device) respectively
master, slave = os.openpty()
  
# Check if file descriptor master
# is open and connected
# to a terminal using os.isatty() method
print("Connected to a terminal:", os.isatty(master))
  
  
# Print the encoding of
# the device associated with
# the file descriptor master
# using os.device_encoding() method
print("Device encoding:", os.device_encoding(master)) 

输出:

Connected to a terminal: False
Device encoding: None
Connected to a terminal: True
Device encoding: UTF-8